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Finding the Fourth Proportional to 591,137.76, 815,765.04 and 322,860

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Solution

The fourth proportional to 591,137.76, 815,765.04 and 322,860 is: 445,544.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,137.76 : 815,765.04 = 322,860 : x
  2. Step 2: Convert to fraction form
    591,137.76/815,765.04 = 322,860/x
  3. Step 3: Cross multiply
    591,137.76x = 815,765.04 × 322,860
  4. Step 4: Simplify right side
    591,137.76x = 263,377,900,814.40
  5. Step 5: Solve for x
    x = 263,377,900,814.40/591,137.76
  6. Step 6: Final answer
    x = 445,544.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.